SMA SC 500U Installation - Manual (Page 44)

SMA Solar Technology AG
44 SC500U-IUS093411 Installation Guide
8 Electrical Connection
This section describes how the Sunny Central is connected to the grid and to the PV modules, and
what precautions must be observed in order to avoid material and personal damages. It provides
information on the necessary cable sizes and the magnitude of the torque for the cable connection.
8.1 Safety
DANGER
Normally grounded conductors may be ungrounded and energized when a ground-fault
is indicated.
Risk of electric shock.
• Test before touching.
• Work on the Sunny Central must be carried out by qualified personnel.
NOTICE
Seeping moisture during installation of the Sunny Central.
Damage to the electronics of the Sunny Central.
• Do not open the Sunny Central when it is raining or when a high humidity is present
(> 95 %).
• For conduit hubs, use only UL Listed rainproof, or wet location hubs complying with
UL 514B for entry into the enclosure.